ITH August 28, 2012 Meeting DOT and ILA Commission - aug 31.docx

Kiggiak-EBA Consulting Ltd.

115, 200 Rivercrest Drive SE Calgary, AB T2C 2X5 CANADA

p. 403.203.3355 f. 403.203.3301

ISSUED FOR USE

INUVIK TO TUKTOYAKTUK HIGHWAY – GRANULAR RESOURCES

MEETING TIME: 3:00 to 4:00 pm DATE: August 28, 2012

LOCATION: IRC Office FILE: V23201487

ATTENDEES: Inuvialuit Land Administration Commission and Staff

Gurdev Jagpal, Regional Superintendent, Department of Transportation

Robyn McGregor, Senior Transportation Engineer, Kiggiak-EBA Consulting Ltd.

1.0 PRESENTATION

The Department of Transportation and its consultant, Kiggiak-EBA appreciated the opportunity to

present information on the proposed material use for the construction and operation of the proposed

Inuvik to Tuktoyaktuk Highway and answer questions from the Inuvialuit Land Administration

Commission and staff. Presentation slides are attached and an electronic copy of the presentation was

provided at the meeting.

2.0 DISCUSSION

Discussion followed the short presentation. Questions raised and answers provided are as follows:

Materials for operations and maintenance are presented for years 1 to 20. Will there be slumping

of the highway embankment in this period?

Some slumping will occur, as well as compaction in the embankment and consolidation

(settling) of the existing ground beneath the road. Materials required in the first twenty years

of operation are greater than in the second twenty years to account for this.

Some of the highway will be close to lakes. Will the terrain in these areas require additional

maintenance for the highway?

There are four terrain types that have been considered in the design and for those areas that are

sensitive to thaw and erosion, strengthening and/or insulation of the subgrade will be included in

the design. This may include geotextile (like that used on Tuk to Source 177 Access Road) on the

existing ground, and geogrids and styrofoam insulation placed within the embankment. The height

of the embankment needs to be sufficient for insulation and snow storage, but of a minimum

thickness for self-clearing of the snow.

INUVIK TO TUKTOYAKTUK HIGHWAY GRANULAR RESOURCES

FILE: V23201487 | AUGUST 28, 2012 | ISSUED FOR USE

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ITH August 28, 2012 Meeting DOT and ILA Commission - aug 31.docx

Insulation has been used at Campbell Creek on the Dempster Highway. It is working for insulation

but snow storage is a problem.

The design will include analysis from the heat and thawing point of view and the strength point of

view relative to the terrain along the highway.

Winter construction will also help in keeping the ground frozen.

What sorts of lessons were learned from the material sources that were used on the Dempster

Highway?

Drainage of the sources is important. The proposed highway will have more ice problems in the

sources so maintaining cover over the ice and drainage will be important.

Finding quality material is important. Pit Run is preferred.

What can you tell us about the material quality and volume in Source 177?

Source 177 was used to construct the access road from Tuktoyaktuk to the source. The material is

not of the best quality but is adequate for the embankment construction. The road is performing

well.

Source 177 is a primary source for the construction of the highway and is listed in the ISR Granular

Resource Management Plan as a primary source for the community of Tuktoyaktuk. The material

quantities need to be proven through investigation, but published reports indicate volumes ranging

from 1.9 million cubic metres to 19 million cubic metres; more than enough material to support the

highway construction and operations, and the needs of the community.

Will there be problems with ice thickness and other ice problems in the pits like on the Dempster?

In the pits on the Dempster there were some problems with ice melting and overflow but these

areas now have good vegetation growth. For the proposed highway, the depth of the ice layer has

been or will be confirmed with the investigations and a cover will be left over the ice to avoid thaw.

What is below the ice layer; is there gravel below?

The thickness of the ice layer is not easy to determine and is likely 100 feet (30 m) or more in some

cases. Even if there is gravel below the ice layer it is not practical to obtain it.

What does the geotextile do?

The geotextile (like that used on the Tuktoyaktuk to Source 177 Road) provides some strength to

the road, and a path for drainage, but is primarily a filter or separation between the natural ground

and the embankment to keep the materials in place.

What do we know about working with ice in the material sources and in ice rich areas?

In the material sources, we will try to avoid the ice rich layer leaving a cover of material on it, or will

recover any exposed ice with the available overburden material before the pit is closed up at the end

of the winter work.

INUVIK TO TUKTOYAKTUK HIGHWAY GRANULAR RESOURCES

FILE: V23201487 | AUGUST 28, 2012 | ISSUED FOR USE

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ITH August 28, 2012 Meeting DOT and ILA Commission - aug 31.docx

The design in the ice rich areas will use lessons learned from the Dempster and other roads. On the

original Dempster highway there was some slumping. In some of those locations, a bench

construction was used with a wider embankment at the bottom, and steeper sideslopes on the rest

of the embankment. In the three or four places where this was used, slumping did not occur again.

Airport Road is different. The chipseal surface was replaced by asphalt pavement 20 years ago. The

problems that were seen just after this will not be seen on the proposed highway.

There was a short discussion on the use of Calcium Chloride for dust control. All agreed that it was

effective, but expensive because of the shipping costs to Inuvik.

Some of the geotextile on the Tuktoyaktuk to Source 177 Access Road is being pulled up along the

edges. How would this be prevented on the proposed highway?

There will be a greater thickness of embankment and the geotextile will be hidden under the

sideslopes.

Also, the design will be well ahead of the construction and after construction ongoing monitoring

will take place.

Gurdev Jagpal of DOT indicated that the original request for the meeting may have been to also discuss

the pits on the Dempster Highway, and offered to provide a visit to those pits if desired.

3.0 CLOSING

Chair Albert Elias thanked DOT and Kiggiak-EBA for the presentation. Robyn McGregor confirmed that she

will prepare notes for this short meeting and provide them to Joshua Mackintosh for review. DOT will then

provide these notes as part of the overall submission to the Environmental Impact Review Board for the

proposed highway project.

Attachments:

PDF version of presentation slides

1

Inuvik to Tuktoyaktuk Highway

Inuvialuit Land Administration

Commission

Granular ResourcesAugust 28, 2012

Alignment:

• Primary 2009 Route

• Alt. 3 – 2010 MinorRealignment

2

Material Sources Being Considered:• Primary Sources:

– 177

– 174

– 170

– 309

– 325/314

– PW2

• Secondary Sources:

– 172

– 173/306

– 307

– 2.45

– 308

– 312

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4

There is sufficient material to build and

maintain the Highway for 50 years or more.

Source

ConstructionEmbankment

(m3)

ConstructionSurfacing

(m3)

OperationalCommon &

Crush - Year 1to 20 (m3)

OperationalCommon &Crush - Year

21 to 40 (m3)

OperationalCommon &Crush - Year

41 to 50 (m3)

EstimatedTotal

Requirement(m3)

EstimatedAmount

Available inSource (m3)

PW2 676,000- - - -

676,000reported as"unlimited"

325/314 919,00082,300 558,750 300,000 89,000 1,949,050 2,170,000

309 979,00082,300 220,000 175,000 - 1,456,300 1,500,000

174 741,25082,400 700,000 487,250 207,500 2,218,400 3,280,000

170 462,750- - - - 462,750 1,000,000

177677,000 - 438,500 300,000 89,000 1,504,500 1,910,000

Totals 4,455,000 247,000 1,917,250 1,262,250 385,500 8,267,000 9,860,000

Sharing of Resources:

• Town of Inuvik: no common sources identified

• Hamlet of Tuktoyaktuk: Source 177

• Mackenzie Gas Project: Sources 308 (2.025) & 309(2.028)

• Tuktoyaktuk Harbour Improvements: no commonsources identified.

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Respecting Husky Lakes

• Sources 314 and 325 are considered as a commonsource and the 1000 m setback from Husky Lakes will berespected.

Other sources considered:

172, 173/305, 307 and 2.45

• Sources 172, 173/305, 307 and 2.45 have beenidentified by KAVIK-STANTEC (2012) as having materialquantity estimates of 2,279,200 m3 and are additionalcandidate sources for construction and/or maintenanceof the Highway.

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Other sources considered: 312

• The far west portion of Source 312 may be a candidatefor further investigation (Ripley, Klohn & LeonoffInternational Limited , 1972); however, area aroundHans Creek is considered sensitive for hunting, fishingand other activities.

• A portion of 312 was investigated in the vicinity of thealignment and found to be not favourable.

Other sources considered: 308

• Source 308 is a candidate for further investigation. It isreported by Ripley, Klohn & Leonoff InternationalLimited (1972) as having material quantity estimates of15,000 m3; however, visual investigation (both by airand on the ground) show that Source 308 is likely tohave greater quantities of material and that a ridge ofpotential material extends south from Source 308 andinto Source 309.

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Surfacing Material

• Material suitable to crush for surfacing is expected to befound at Sources 174, 309, 325/314. If suitable materialis not found at these sources, existing sources forsurfacing material (Ya Ya Lake and Inuvik Airport Quarry)will be utilized.

Bulking and Compaction

• Estimated quantities shown for construction andoperations are compacted/in place quantities.Estimated available quantities in the sources are in-situ.Bulking of the materials once removed from the sourceis anticipated to be greater than the impact ofcompaction on quantities when the material is placed inthe road, resulting in the in-situ measure of materialremoved from a source to be less than the estimatedquantities for construction and operations shown.

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Using Tills:• QUALITY:

– Most of the sources identified for use are reported to have materials that are better qualitythan the till sources in the area. This is one of the main reasons why they have been chosenover other sources.

• MOISTURE:– The sources in the area that contain tills have higher moisture contents. Materials with higher

moisture contents are difficult to work with during construction. They are more expensive todrill and blast to obtain the size and shape that can efficiently be handled and do not holdshape and structure in the road (embankment) when they are subject to thaw.

• PW2:– For the southern portion of the Highway (km 0 to km 40), Source PW2 is described by PWC

1977 to contain till. If the moisture content in the tills are high then it may be necessary tostockpile the material in the pit, allow it to thaw and lose moisture, then place it in thefollowing season. This has its own disadvantages in that it introduces drainage problems in thepit and a single season may not be sufficient to allow for drying of the materials. With thesematerials, a larger spread area along the alignment may be required to allow for evaporation.

Next Steps

• Investigation (drilling) of Sources PW2, 308, 309, 174,177 to confirm material quantity and quality estimatesand conduct site-specific studies, as needed, to supportthe regulatory approvals process (land use and quarrypermits).

• Develop Pit Management Plans and secure Land Useand Quarry Permits prior to construction.

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Pit Management Plans:

• Development of Pit Management Plans include:

– Estimated volume to be extracted

– Consultations with land owners and other stakeholders

– Discussions with regulators

– Environmental constraints

– Area to be developed

– Pit development phasing plans for reclamation

• Pits will be developed following the applicableguidelines to mitigate impacts, minimize the footprintand best serve reclamation.

Information Sources:

Source Reference

PW2Public Works Canada, 1976. Report : geotechnical investigation mile 970 (km 0) to mile 1059 (km 143)(Inuvik to Tuktoyaktuk), Mackenzie Highway : combined data - 1976 to 1980 / Canada. PublicWorks Canada. Western Region. October 1976. ASTIS 35303

325/314Kavik-Stantec Inc., 2012. Inuvik - Tuktoyaktuk Highway 2012 Borrow Source Investigation, BorrowSource 314/325 Summary Report. Prepared for E Gruben's Transport Ltd. July 2012

309Ripley, Klohn & Leonoff International Limited , 1972. Granular materials inventory, Zone III. Preparedfor Department of Indian Affairs and Northern Development. 1972.

174R.M Hardy & Associates Ltd., 1977. Granular Materials Inventory, Tuktoyaktuk, NorthwestTerritories. Prepared for Department of Indian and Northern Development. August 1977.

170Kavik-Stantec Inc., 2012. Inuvik - Tuktoyaktuk Highway 2012 Borrow Source Investigation, BorrowSource 170 Summary Report. Prepared for E Gruben's Transport Ltd. July 2012

177R.M Hardy & Associates Ltd., 1977. Granular Materials Inventory, Tuktoyaktuk, NorthwestTerritories. Prepared for Department of Indian and Northern Development. August 1977.